Open Event Server 1.19.1 Unauthenticated Member Roster Export via CSV Export Endpoint
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Open Event Server through 1.19.1 contains a missing authentication vulnerability that allows unauthenticated attackers to export the complete member roster of any group, including email addresses, names, join dates, and roles, by submitting requests to the group followers CSV export endpoint which lacks any authentication decorator. Attackers can enumerate sequential group IDs via brute-force, trigger an export via the unauthenticated POST endpoint, then poll the unauthenticated task status endpoint until completion to retrieve a download URL containing the full member CSV.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
fossasia · open-event-serverpublic PoCs found — 1
cve_referencegithub.com/geo-chen/oss/blob/main/open-event-server.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.